Why is the airport tax at some airport charged outside the airfare ticket but instead must be paid at the airport? Example from Uyuni airport
amtrak
tasmania
normandy
vatican-city
vantage-points
samoa
cafes
visa-renewals
easyjet
malta
bahrain
dubrovnik
south-korean-citizens
saw
gibraltar
darien-gap
medellin
low-cost-carriers
lhr
payment
finnair
athens
banff
the-canadian
datv
hebrew
norwegian-air-shuttle
bcn
world-war-ii
aep